This is a faithful saying,
and these things I will that thou affirm constantly,
that they which have believed in God might be careful
to maintain good works. These things are good and profitable unto men.
Titus 3:8
Let us hold fast the profession of our faith without wavering;
(for he is faithful that promised;)
And let us consider one another to provoke unto love and to good works:
Not forsaking the assembling of ourselves together,
as the manner of some is;
but exhorting one another:
and so much the more,
as ye see the day approaching.
Hebrews 10:23-26
Moreover it is required in stewards,
that a man be found faithful.
I Corinthians 4:2