Saved to live again and chosen to rule and reign with Christ for the 1,000 yrs are two different things. No one knows who are the chosen with the exception of the 12 apostles in which I really do not say that the Lord chose Matthias and believe that Paul will be the 12th apostle. While they ask the Lord to let the lot fall on the TWO THEY had chosen to replace Judas it does not mean that his choice was Matthias for the lot had to fall at one of them for what goes up, must come down. But I personally do not believe it to say that Jesus chose Matthias or it would have said so.
Many believers say they love Jesus, but do you see all believers producing fruit worthy of ruling the earth? Please use some godly sense and recognize that this is just a tradition of man to think such a flawed understanding.
John 17:6 I have manifested thy name unto the men which thou gavest me out of the world: thine they were, and thou gavest them me; and they have kept thy word.
7 Now they have known that all things whatsoever thou hast given me are of thee.
8 For I have given unto them the words which thou gavest me; and they have received them, and have known surely that I came out from thee, and they have believed that thou didst send me.
9 I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine.
10 And all mine are thine, and thine are mine; and I am glorified in them.
11 And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are.
12 While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled.
KJV
John 6:70
70 Jesus answered them, Have not I chosen you twelve, and one of you is a devil?
KJV
Mark 13:20
20 And except that the Lord had shortened those days, no flesh should be saved: but for the elect's sake, whom he hath chosen, he hath shortened the days.
KJV
Matt 22:14
14 For many are called, but few are chosen.
KJV
Acts 9:15
15 But the Lord said unto him, Go thy way: for he is a chosen vessel unto me, to bear my name before the Gentiles, and kings, and the children of Israel:
KJV