任何形式的傳道，都可以成為是“有效的呼召”，不一定拘泥於教導；反過來，進入可見教會的人未必得救了，這時“教導”即可成為“有效呼召”的外在形式。

亞伯拉罕所信的，是那叫死人復活使無變為有的神，他在主面前作我們世人的父。如經上所記，我已經立你作多國的父。

(As it is written, I have made thee a father of many nations,) before him whom he believed, even God, who quickeneth the dead, and calleth (kaleō)those things which be not as though they were.

七十氏譯本就是用kaleō這個字來翻譯qārā'的，用教義的術語來說，就是“有效的呼召”。