“We can neither generate nor maintain our own zeal. It is of supreme importance, then, that we maintain a correct relationship with the Holy Spirit, and that we do not grieve Him. It is the work of the gracious Holy Spirit constantly to pour oil on the fire and keep our zeal at boiling point.”
It is no wonder that the zeal of the disciples dramatically changed after the coming of the Holy Spirit at Pentecost. Now that He is here, we have no excuse except our own laziness to not be zealous for the gospel and advancement of God’s work through the church.