"Faith" comes before "feelings" in the dictionary! So it does in the matter of spiritual blessing.
Many would like to reverse the order. They would seek to feel happy before in simple faith they have taken God at His word.
But God would not have assurance of salvation rest on such a flimsy foundation as feelings. He would have us rest on Christ and His atoning sacrifice alone.
Feelings ebb and flow. They come and go like the tides of the sea shore. Christ's work abides. God's way is unchanging.
Christ did it—God says it—I believe it—that settles it!
I, the sinner, believe what? "God so loved the world, that He gave His only begotten Son, that whosoever believeth in Him should not perish, but have everlasting life." John 3:1616For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. (John 3:16).
Why did the Lord Jesus do it? Because there was no other way in which we could be blessed.
Why do I believe it? Because God says it. Not because I feel anything this way or that. Simply and only because God says it.
Happy feelings depend upon simple faith in Christ's sacrifice, and in God's word about it.