Christopher Love (d. 1651), a Welsh Presbyterian pastor, wrote an excellent book on effectual calling and election. His main text was 2 Peter 1:10 (Therefore, brethren, be all the more diligent to make certain about His calling and choosing you; for as long as you practice these things, you will never stumble. NASB). In one section of this book, he talks about the comforts of effectual calling:
Jesus effectually calls a poor sinner before that sinner looks unto Jesus. Should God require heaven upon the condition that you who had been first in the transgression should be first in seeking reconciliation, we would never have the enmity between God and us ended. But behold, here is mercy and here is a ground of comfort, that though we are first in that transgression, Christ is the first in suing out reconciliation. Jesus effectually calls poor sinners before they either call or look unto him at all (Is. 65:1).
Here you see, that Jesus goes out first to call you before you go out to call him. And oh, what comfort this is! Christ does not stay away until you call out to him; but he looks upon you before you look upon him.
We read that Matthew the publican was looking after his money, and, at that time, Jesus was looking after Matthew’s soul. We read this of the disciples: while they were fixing their nets and looking after their fish, Jesus took the occasion with the hook of the gospel to catch them. We read that Paul, while he was breathing out persecution against the church and raging with anger against the saints, was called to be a saint.
So this is very comforting. God first looks after a sinner in his effectual calling before a sinner looks after Christ. God first looks upon you, enlightens you by a sermon, and seizes your conscience by a command before you look unto him.
Or, in the sweet words of two great hymns:
I sought the Lord, and afterward I knew;
He moved my soul to seek him seeking me;
It was not I that found O Savior true; no I was found of thee.
Tis not that I did choose the, for Lord that could not be;
This heart would still refuse thee, hadst though not chosen me!
(The above quotes by Christopher Love are – slightly edited – found in Effectual Calling and Election, chapter 4.)