Christs death produces saving results in that by it the Children of God/Sheep/Church is gathered unto God Jn 11:50-52
50 Nor consider that it is expedient for us, that one man should die for the people, and that the whole nation perish not.
51 And this spake he not of himself: but being high priest that year, he prophesied that Jesus should die for that nation;
52 And not for that nation only, but that [in order that] also he should gather together in one the children of God that were scattered abroad.
Clearly the purpose of His dying for that nation [jews] but not them only[gentiles] was for the gathering of them together to form them into One People unto God. This is also expressed earlier in John here Jn 10:16
15 As the Father knoweth me, even so know I the Father: and I lay down my life for the sheep.
16 And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
The word bring here serves the same purpose as the word gather in Jn 11:52.
The word gather means συνάγω:
to lead together, bring together, come together (pass.), entertain
Usage: I gather together, collect, assemble, receive with hospitality, entertain.
to join together, join in one (those previously separated):
This speaks to the jews and gentiles being once separated, now being brought together by the death of Christ Eph 2:11-19
11 Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands;
12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
13 But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
14 For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
15 Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
16 And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
17 And came and preached peace to you which were afar off, and to them that were nigh.
18 For through him we both have access by one Spirit unto the Father.
19 Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
Click to expand...
This gathering was prophesied in the OT here Gen 49:9-10
9 Judah is a lion's whelp: from the prey, my son, thou art gone up: he stooped down, he couched as a lion, and as an old lion; who shall rouse him up?
10 The sceptre shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him shall the gathering of the people be.
Christ is Shiloh. This is probably what Caiaphas the high priest was moved to utter about Jn 11:49ff
The word for gathering in Gen 49:10 is the word yᵊqāhâ:
obedience, cleansing, purging,; obedience:—gathering, to obey.
The Death of Christ was designed to bring together the people of God from among all nations to the obedience of the Faith, under One Head.
