1 On the day of Pentecost all the believers were meeting together in one place. 2 Suddenly, there was a sound from heaven like the roaring of a mighty windstorm, and it filled the house where they were sitting. 3 Then, what looked like flames or tongues of fire appeared and settled on each of them. 4 And everyone present was filled with the Holy Spirit and began speaking in other languages, as the Holy Spirit gave them this ability. — Acts 2:1-4 NLT
Pentecost is the Greek name for Shavout (Hebrew for “Weeks”). Shavout was the celebration for the giving of the law to Moses at Mount Sinai. That occurred fifty days after the Passover in Egypt. It was now the fiftieth day since the Passover had been celebrated in Jerusalem. The Holy Spirit was given at this time confirming the New Covenant of Grace and the beginning of what we call the “church” age. When the Bible says that we can do nothing without Jesus (John 15:5) but we can do all things through Christ (Phil 4:13), the verses are referring to the strength and direction that we receive from the Holy Spirit who abides in us. He gives us the words to say and the ability to say those words. We need to make plans, study and be prepared to always give a reason for our hope in Jesus Christ, (1 Peter 3:13), but we should always be flexible enough to make an adjustment in our plans. Why? Because we can’t plan for every conceivable event but the Holy Spirit can and does. It is He Who will give us the exact words to speak and the strength to speak them in any situation. (Luke 12: 11-12). Just be obedient and trust the Holy Spirt for strength and safety.