Psalms 17:3

Thou hast proved mine heart testing it for its sincerity; Thou hast visited me in the night, an investigation at that time being especially searching since the soul is then undisturbed by the happenings and noises of the outside world; Thou hast tried me, making a very careful examination, and shalt find nothing, no wicked thoughts; I am purposed that my mouth shall not transgress, he would not permit a sinful thought to pass the door of his mouth.