This is his commandment, that we should believe on the name of his Son Jesus Christ. 1 John 3:23. For God has sent his Son into the world that we might live through him. 1 John 4:9.
The Father breaks forth, as it were, through the whole scripture, in high praises of his Son. He calls out from heaven, "This is my beloved Son, in whom I am well pleased, hear ye him." Matthew 17:5. Nothing therefore can be more agreeable to him than to receive this his Son and believe his reports. John 16:27. and on doing this, we shall have life: but by omitting it, we look upon him as a liar. Unbelief therefore in him who refuses to accept of this great gift, is no doubt, the greatest of all sins. O Lord, teach me this, and grant me faith.
“Why art thou so backward, O my poor soul, to believe like the rest of God’s children, in Christ! Hast thou not as good a right to it as they have! who can dispute with thee this privilege! It is the express will of the Father, nay. he even commands thee to do it. Has he given his only Son, by an act of inconceivable love, to die for thee, to the very end that thou shouldst live: O what a pleasing thing will it be to him, to put thy whole trust upon this his well-beloved Son! This would be the joy of his heart, more than any thing else. Therefore delay no longer to receive what his love has offered thee; but firmly believe that the Father loves thee, as well as the Son."