'Testimony' in the Bible

Truth I say in Christ, I lie not, my conscience bearing testimony with me in the Holy Spirit,

for I bear them testimony that they have a zeal of God, but not according to knowledge,

for, 'Thou shalt not commit adultery, Thou shalt do no murder, Thou shalt not steal, Thou shalt not bear false testimony, Thou shalt not covet;' and if there is any other command, in this word it is summed up, in this: 'Thou shalt love thy neighbour as thyself;'