Thus says the LORD: "My word shall not return to me void, but shall do my will, achieving the end for which I sent it."God is talking about Jesus here. Jesus is God's Word, whom He sent out to do His will. Jesus did not return to God until He had achieved the end for which He was sent.
- Isaiah 55:11
Although our words are just words, they can still hold much power, and we should choose them carefully. A careless word thrown out without thought can cause great distress and harm. But the right word at the right time could result in salvation. If we do it right, we can 'send out' our words and accomplish many things. Words of comfort to someone grieving. Words of advice to someone in trouble. Words of faith to someone searching.
How can we be sure we are choosing the right words? God's Word was guided by the Holy Spirit. Ours should be too. Whenever possible, and especially in high pressure situations, take a moment to pray to the Holy Spirit and ask for His guidance. Ask for the right words to say, and words NOT to say. Let Him speak through you, and you can be sure that your words will make a difference.