G4731–στερεός–stereos

Howbeit the firm foundation of God standeth, having this seal, The Lord knoweth them that are his: and, Let every one that nameth the name of the Lord depart from unrighteousness.

στερεὸς stereos “the firm”

For when by reason of the time ye ought to be teachers, ye have need again that some one teach you the rudiments of the first principles of the oracles of God; and are become such as have need of milk, and not of solid food.

στερεᾶς stereas “of solid”

But solid food is for fullgrown men, [supplied: even] those who by reason of use have their senses exercised to discern good and evil.

στερεὰ sterea “solid”

whom withstand stedfast in your faith, knowing that the same sufferings are accomplished in your brethren who are in the world.

στερεοὶ stereoi “firm”