Acts 16:25
But about midnight Paul and Silas, after joining in prayer, sang hymns to God: and the prisoners heard them.
Luke 6:12
Now it came to pass in those days, that he went out into a mountain to pray and continued all night in an oratory of God.
John 14:21
He that hath my commandments, and keepeth them, he is the person who loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
John 15:10
If ye keep my commandments, ye shall abide in my love; even as I have kept my Father's commandments, and as I abide in his love.