Union with God through Christ
In that day you will ask in My name, and I do not say to you that I will request of the Father on your behalf; for the Father Himself loves you, because you have loved Me and have believed that I came forth from the Father.
From this passage some might conclude that God does not love his elect until they come to Christ in faith. The analogia scriptura prevents such an erroneous interpretation.
Because you have loved me. These words remind us that the only bond of our union with God is, to be united to Christ; and we are united to him by a faith which is not reigned, but which springs from sincere affection, which he describes by the name of love; for no man believes purely in Christ who does not cordially embrace him, and, therefore, by this word he has well expressed the power and nature of faith. But if it is only when we have loved Christ that God begins to love us, it follows that the commencement of salvation is from ourselves, because we have anticipated the grace of God. Numerous passages of Scripture, on the other hand, are opposed to this statement. The promise of God is, I will cause them to love me; and John says, Not that we first loved Him, (1 John iv. 7.) It would be superfluous to collect many passages; for nothing is more certain than this doctrine, that the Lord calleth those things which are not, (Rom. iv. 17) raises the dead, (Luke vii. 22,) unites himself to those who were strangers to him, (Eph. ii. 12,) makes hearts of flesh out of hearts of stone, (Ezek. xxxvi. 26,) manifests himself to those who do not seek him, (Isa. lxv. 1; Rom. x. 20.) I reply, God loves men in a secret way, before they are called, if they are among the elect; for he loves his own before they are created; but, as they are not yet reconciled, they are justly accounted enemies of God, as Paul speaks, When we were enemies, we were reconciled to God by the death of his Son, (Rom. v. 10.) On this ground it is said that we are loved by God, when we love Christ; because we have the pledge of the fatherly love of Him from whom we formerly recoiled as our offended Judge.
—John Calvin, Calvin’s Commentaries Volume XVIII (Baker Books, 2009), Commentary on the Gospel according to John, 2:158–159.