'Building' in the Bible

for of God we are fellow-workmen; God's tillage, God's building ye are.

so also ye, since ye are earnestly desirous of spiritual gifts, for the building up of the assembly seek that ye may abound;

What then is it, brethren? whenever ye may come together, each of you hath a psalm, hath a teaching, hath a tongue, hath a revelation, hath an interpretation? let all things be for building up;