Mark 3:13 - "And He went up on the mountain and summoned those whom He Himself wanted, and they came to Him."
When we come near to God in those mountaintop moments, He will always seek to draw us closer to Himself. In these instances, it will be our choice to come or not. What will it cost us? Ourselves -- vanquished on the windswept expanses of the peaks of God's delights. When we experience His calling and our coming, we must be careful to then carry out what He desires. If we believe God has just called us into fellowship with Him on the mountain and will not require something of us, then we have not come to know the Lord as we should.
Too often, the joy of the mountaintop is aborted early because we refuse to follow through with the next level of obedience. The call of God and our coming to Him is often irresistible. However, the going out from Him with a new knowledge to obey can easily meet resistance by the self we should have left on the windswept peak. Beloved of God, may we hear His voice, come at His calling, and go down from the mountain with the joy of obedience.