Acts 10:43.

Who is it that has everlasting life?

HE that believeth on the Son hath everlasting llfe.

John 3:36.

Do you believe? If so, have you life? You say, “I don’t feel any “different.” It is not a matter of feeling, but of believing, see how God puts the order of things.

IN whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that Holy Spirit of promise.

Ephesians 1:13.

After you believe, God seals you. After you commit yourself for Christ confessing Him as your Saviour, the feeling comes. Don't “get the cart before the horse.”

AND this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us. And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.

I John 5:14, 15.