John 6:37, 44-45, 65

All that My Father gives Me will come to Me; and the one who comes to Me I will most certainly not cast out [I will never, never reject anyone who follows Me].

No one can come to Me unless the Father who sent Me draws him [giving him the desire to come to Me]; and I will raise him up [from the dead] on the last day. It is written in the prophets, ‘AND THEY WILL ALL BE TAUGHT OF GOD.’ Everyone who has listened to and learned from the Father, comes to Me. [Is 54:13]

And He was saying, “This is the reason why I have told you that no one can come to Me unless it has been granted him [that is, unless he is enabled to do so] by the Father.”