Bible Verses About All Christians Should Be As Missionaries: With a willing heart

every man and woman (whom their heart hath made willing to bring in for all the work which Jehovah commanded to be done by the hand of Moses) of the sons of Israel brought in a willing-offering to Jehovah.

And the people rejoice because of their offering willingly, for with a perfect heart they have offered willingly to Jehovah; and also David the king hath rejoiced--great joy.

yea, because, who am I, and who are my people, that we retain power to offer thus willingly? but of Thee is the whole, and out of Thy hand we have given to Thee;