Noun
missionary zeal
(figuratively) great enthusiasm
to do something with missionary zeal
We have been filled with grief as we have witnessed the decline of the North American Church that was once filled with missionary zeal and yet now seems determined to bury itself in a deadly embrace with the spirit of the age. Peter Akinola
Missionary zeal does not grow out of intellectual beliefs, nor out of theological arguments, but out of love. If I do not love a person I am not moved to help him by proofs that he is in need; if I do love him, I wait for no proof of a special need to urge me to help him. Roland Allen