Here's the original post with scripture quoted for easy reference;
Israel defined in both the Old and New Testaments.
Saints;
“And they gathered themselves together against Moses and against Aaron, and said unto them, Ye take too much upon you, seeing all the congregation are holy, every one of them, and the Lord is among them: wherefore then lift ye up yourselves above the congregation of the Lord?” (Numbers 16:3)
“Yea, he loved the people; All his saints are in thy hand: And they sat down at thy feet; Every one shall receive of thy words.” (Deuteronomy 33:3)
“Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus:” (Ephesians 1:1)
“To all that be in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father, and the Lord Jesus Christ.” (Romans 1:7)
Elect;
“For thou art an holy people unto the Lord thy God: the Lord thy God hath chosen thee to be a special people unto himself, above all people that are upon the face of the earth.” (Deuteronomy 7:6)
“The Lord did not set his love upon you, nor choose you, because ye were more in number than any people; for ye were the fewest of all people:” (Deuteronomy 7:7)
“And because he loved thy fathers, therefore he chose their seed after them, and brought thee out in his sight with his mighty power out of Egypt;” (Deuteronomy 4:37)
“Put on therefore, as the elect of God, holy and beloved, bowels of mercies, kindness, humbleness of mind, meekness, longsuffering;” (Colossians 3:12)
“Paul, a servant of God, and an apostle of Jesus Christ, according to the faith of God’s elect, and the acknowledging of the truth which is after godliness;” (Titus 1:1)
Beloved;
“Knowing, brethren beloved, your election of God.” (1 Thessalonians 1:4)
“The Lord did not set his love upon you, nor choose you, because ye were more in number than any people; for ye were the fewest of all people:” (Deuteronomy 7:7)
“And because he loved thy fathers, therefore he chose their seed after them, and brought thee out in his sight with his mighty power out of Egypt;” (Deuteronomy 4:37)
“Put on therefore, as the elect of God, holy and beloved, bowels of mercies, kindness, humbleness of mind, meekness, longsuffering;” (Colossians 3:12)
“Knowing, brethren beloved, your election of God.” (1 Thessalonians 1:4)
Called;
“Thou whom I have taken from the ends of the earth, And called thee from the chief men thereof, And said unto thee, Thou art my servant; I have chosen thee, and not cast thee away.” (Isaiah 41:9)
“But now thus saith the Lord that created thee, O Jacob, And he that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine.” (Isaiah 43:1)
“Among whom are ye also the called of Jesus Christ:” (Romans 1:6)
“To all that be in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father, and the Lord Jesus Christ.” (Romans 1:7)
Church;
“Unto the church of God which is at Corinth, to them that are sanctified in Christ Jesus, called to be saints, with all that in every place call upon the name of Jesus Christ our Lord, both theirs and ours:” (1 Corinthians 1:2)
“And the heavens shall praise thy wonders, O Lord: Thy faithfulness also in the congregation of the saints.” (Psalm 89:5)
“Therefore thou shalt have none that shall cast a cord by lot In the congregation of the Lord.” (Micah 2:5)
“This is he, that was in the church in the wilderness with the angel which spake to him in the mount Sina, and with our fathers: who received the lively oracles to give unto us:” (Acts 7:38)
“Saying, I will declare thy name unto my brethren, in the midst of the church will I sing praise unto thee.” (Hebrews 2:12)
“Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus:” (Ephesians 1:1)
“Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.” (Acts 20:28)
Flock;
“And the word of the Lord came unto me, saying, Son of man, prophesy against the shepherds of Israel, prophesy, and say unto them, Thus saith the Lord God unto the shepherds; Woe be to the shepherds of Israel that do feed themselves! should not the shepherds feed the flocks? Ye eat the fat, and ye clothe you with the wool, ye kill them that are fed: but ye feed not the flock. The diseased have ye not strengthened, neither have ye healed that which was sick, neither have ye bound up that which was broken, neither have ye brought again that which was driven away, neither have ye sought that which was lost; but with force and with cruelty have ye ruled them. And they were scattered, because there is no shepherd: and they became meat to all the beasts of the field, when they were scattered. My sheep wandered through all the mountains, and upon every high hill: yea, my flock was scattered upon all the face of the earth, and none did search or seek after them. Therefore, ye shepherds, hear the word of the Lord; As I live, saith the Lord God, surely because my flock became a prey, and my flock became meat to every beast of the field, because there was no shepherd, neither did my shepherds search for my flock, but the shepherds fed themselves, and fed not my flock; Therefore, O ye shepherds, hear the word of the Lord; Thus saith the Lord God; Behold, I am against the shepherds; and I will require my flock at their hand, and cause them to cease from feeding the flock; neither shall the shepherds feed themselves any more; for I will deliver my flock from their mouth, that they may not be meat for them. For thus saith the Lord God; Behold, I, even I, will both search my sheep, and seek them out. As a shepherd seeketh out his flock in the day that he is among his sheep that are scattered; so will I seek out my sheep, and will deliver them out of all places where they have been scattered in the cloudy and dark day. And I will bring them out from the people, and gather them from the countries, and will bring them to their own land, and feed them upon the mountains of Israel by the rivers, and in all the inhabited places of the country. I will feed them in a good pasture, and upon the high mountains of Israel shall their fold be: there shall they lie in a good fold, and in a fat pasture shall they feed upon the mountains of Israel. I will feed my flock, and I will cause them to lie down, saith the Lord God. I will seek that which was lost, and bring again that which was driven away, and will bind up that which was broken, and will strengthen that which was sick: but I will destroy the fat and the strong; I will feed them with judgment. And as for you, O my flock, thus saith the Lord God; Behold, I judge between cattle and cattle, between the rams and the he goats. Seemeth it a small thing unto you to have eaten up the good pasture, but ye must tread down with your feet the residue of your pastures? and to have drunk of the deep waters, but ye must foul the residue with your feet? And as for my flock, they eat that which ye have trodden with your feet; and they drink that which ye have fouled with your feet. Therefore thus saith the Lord God unto them; Behold, I, even I, will judge between the fat cattle and between the lean cattle. Because ye have thrust with side and with shoulder, and pushed all the diseased with your horns, till ye have scattered them abroad; Therefore will I save my flock, and they shall no more be a prey; and I will judge between cattle and cattle. And I will set up one shepherd over them, and he shall feed them, even my servant David; he shall feed them, and he shall be their shepherd. And I the Lord will be their God, and my servant David a prince among them; I the Lord have spoken it. And I will make with them a covenant of peace, and will cause the evil beasts to cease out of the land: and they shall dwell safely in the wilderness, and sleep in the woods. And I will make them and the places round about my hill a blessing; and I will cause the shower to come down in his season; there shall be showers of blessing. And the tree of the field shall yield her fruit, and the earth shall yield her increase, and they shall be safe in their land, and shall know that I am the Lord, when I have broken the bands of their yoke, and delivered them out of the hand of those that served themselves of them. And they shall no more be a prey to the heathen, neither shall the beast of the land devour them; but they shall dwell safely, and none shall make them afraid. And I will raise up for them a plant of renown, and they shall be no more consumed with hunger in the land, neither bear the shame of the heathen any more. Thus shall they know that I the Lord their God am with them, and that they, even the house of Israel, are my people, saith the Lord God. And ye my flock, the flock of my pasture, are men, and I am your God, saith the Lord God.” (Ezekiel 34)
“Thou leddest thy people like a flock By the hand of Moses and Aaron.” (Psalm 77:20)
“Fear not, little flock; for it is your Father’s good pleasure to give you the kingdom.” (Luke 12:32)
“Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre, but of a ready mind;” (1 Peter 5:2)