'Buildeth' in the Bible

According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon.

But if any man buildeth on the foundation gold, silver, costly stones, wood, hay, stubble;

And concerning the things sacrificed to idols, we have known that we all have knowledge: knowledge puffeth up, but love buildeth up;