And this is life eternal,.... That is, the beginning and pledge of it, the way unto it, and means of it, and what will certainly issue in it:
that they might know thee, the only true God, and Jesus Christ, whom thou hast sent. The knowledge of God here spoken of, is not the knowledge of him by the light of nature, and works of creation; for a man may know God in this sense, and not know him in Christ, nor anything of Christ; yea, may know God and profess him in words, and in works deny him, as the Heathens did; nor is eternal life known hereby, nor connected with it: nor is it such a knowledge of God as is to be obtained by the law of Moses, in which God is represented as a righteous and incensed Being; nor is there in it any discovery of God, as a God of love, grace, and mercy in Christ; nor any revelation of a Mediator, Saviour and Redeemer; nor can it either show, or give to persons eternal life; and yet what is here said of the knowledge of God and Christ, the Jews say of the law (d),
But this is to be understood of an evangelic knowledge of God, as the God and Father of Christ, as the God of all grace, pardoning iniquity, transgression and sin, and of Christ Mediator; not a general, notional, and speculative knowledge; but a practical and experimental one; a knowledge of approbation and appropriation; a fiducial one, whereby a soul believes in Christ, and trusts in his blood, righteousness, and sacrifice for salvation; and which, though imperfect, is progressive.