Psalms 89:30-37
“If his sons forsake my law
and do not follow my statutes,
if they violate my decrees
and fail to keep my commands,
I will punish their sin with the rod,
their iniquity with flogging;
but I will not take my love from him,
nor will I ever betray my faithfulness.
I will not violate my covenant
or alter what my lips have uttered.
Once for all, I have sworn by my holiness—
and I will not lie to David—
that his line will continue forever
and his throne endure before me like the sun;
it will be established forever like the moon,
the faithful witness in the sky.”