God has called us to be more than just bench warmers in the Church, and become full of knowledge but do nothing with it to advance His Kingdom. We are called to help advance His Kingdom here on earth by helping the Church, playing our part, and being a disciple of Christ by spreading the Gospel to every living creature. It is written in the Bible that we are commanded to spread the Gospel by being a Disciple of Christ. Disciple means “disciplined one”.
It is written in the Bible that the Holy Spirit will give you the words to say the very same hour that you are required to speak. There are a number of instances where this happens in the Bible. Also there is a parable that not all people will receive the seed of Word of God (the parable of the seed) for it to grow. We, as Christians, don’t boast about what is our duty to do, to spread the Good News about Jesus Christ. Also we may reap what others have sown and vice versa. We may introduce someone to the Word and another comes later to water it. So even if someone rejects the Word at that instant you may have planted the seed for it to later grow.