'Lord' in the Bible

Blessed be the God and Father of our Lord Jesus Christ, who according to his great mercy became our father again to a living hope through the resurrection of Jesus Christ from the dead,

if indeed you have tasted that the Lord is gracious:

as Sarah obeyed Abraham, calling him lord, whose children you now are, if you do well, and are not put in fear by any terror.

For the eyes of the Lord are on the righteous, and his ears open to their prayer; but the face of the Lord is against those who do evil."

But sanctify the Lord God in your hearts; and always be ready to give an answer to everyone who asks you a reason concerning the hope that is in you, with humility and fear: