Andrew
Andrew led his brother, Peter, to Jesus. Andrew was first introduced to Jesus and, recognizing Him as the Messiah, he went and found his brother and testified, “we have found the Messiah.”
Peter was later given the keys to the kingdom and he used them powerfully on the day of Pentecost and with the household of Cornelius.
One of the lessons to know about leadership involves leading others to Jesus allowing Him to work through those vessels to accomplish His purpose.
Who knows but the individual we lead to Jesus may be the very one who will lead thousands to Him.