'Justly' in the Bible

He hath shewed thee, O man, what is good; and what doth the LORD require of thee, but to do justly, and to love mercy, and to walk humbly with thy God?

And we indeed justly; for we receive the due reward of our deeds: but this man hath done nothing amiss.

Ye are witnesses, and God also, how holily and justly and unblameably we behaved ourselves among you that believe: