Acts 2:2-4
Suddenly a sound like the blowing of a violent wind came from heaven and filled the whole house where they were sitting. They saw what seemed to be tongues of fire that separated and came to rest on each of them. All of them were filled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them.
Martyn Lloyd-Jones once said,
Do you know anything of this fire? If you do not, confess it to God and acknowledge it. Repent, and ask Him to send the Spirit and His love into you until you are melted and moved, until you are filled with his love divine, and know His love to you, and rejoice in it as his child, and look forward to the hope of the coming glory. “Quench not the Spirit”, but rather “be filled with the Spirit” and “rejoice in Christ Jesus”.
As a practical example of the value of being led by the Holy Spirit, Martyn spoke about a day in the life of a preacher…
I say it again to the glory of God, this pulpit is the most romantic place in the universe as far as I’m concerned, and for this reason, that I never know what’s going to happen when I get here. Never. My anticipations are often falsified on both sides. This is wonderful. The temptation for the preacher, you see, is to think that if he has prepared what he regards as a good sermon, it’s going to be a wonderful service, and it sometimes can be a very bad one. On the other hand, the poor man may have had a very difficult and a trying week. He may have been very ill, a thousand and one things may have happened to him, and he may go into the pulpit with fear and trembling, feeling that he hasn’t done his work; he’s got nothing. And it may be one of the most glorious services he has ever had the privilege of conducting. Why? Because he doesn’t control the power [within of the Holy Spirit]. It varies. And not only in preaching but in daily life and experience. It is the well of water that is within us and we don’t control it. It controls us.
Jesus said,
"but whoever drinks the water I give them will never thirst. Indeed, the water I give them will become in them a spring of water welling up to eternal life.”