Because Thy lovingkindness is better than life, my lips shall praise Thee. – Psalm 63:3

By Him therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to His name. – Hebrews 13:15

I love to be singing in my heart, if I may not sing with my tongue. I remember a servant that used to sing at the washtub, and sing in the kitchen; and when some one asked her why she was always singing, she said that if it did not do anything else it kept bad thoughts out of her mind. There is a great deal in that; for bad thoughts are bad tenants, who pay no rent and foul the house. I knew a dear old Methodist preacher, who is now in heaven, who when he came downstairs of a morning was always tooting a bit of a hymn over, and he did the same in the barn, and the field. I have passed him in the street, and noted his happy melody: indeed he was always singing. He never took much notice of anybody, so as to be afraid of being overheard. Whether people heard him or not did not make much difference to him. He was singing to the Lord, not to them; and so he went on singing. I do not think he had much of a voice, or an ear for music, but his soul was made up of praise, and that is better than a musical education. God does not criticize our voice, but He accepts our heart. Oh, to be singing the praises of God every minute of our lives, and never ceasing therefrom! Do you not think that many fail in this respect? They are not preparing for heaven, where all is praise, or they would take up the joyful employment at once.

Bless Him in every way, for everything, at all times, and in all places. Let all that is within you bless His holy name. Go your way rejoicing. May His Spirit help you so to do! ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1763.cfm