Sometimes I get tired in
the Lord's work, but I never get tired of
the Lord's work. When you are tired, take a break. Rest. Recharge. Even Jesus took time off periodically. The point is that we must never get tired of doing the Lord's work. It is a great privilege to be called to do it.
There are sacrifices we make as followers of Jesus Christ. There are things we lose. There are persecutions we face. There are hardships we endure. In the Beatitudes, Jesus said, "Blessed are those who are persecuted for righteousness' sake, for theirs is the kingdom of Heaven. Blessed are you when they revile and persecute you, and say all kinds of evil against you falsely for My sake. Rejoice and be exceedingly glad, for great is your reward in Heaven, for so they persecuted the prophets who were before you." (Matthew 5:10–12).
Notice the word "blessed" is used twice to emphasize the generous blessing of God on the persecuted. Another way to translate it would be "double-blessed are the persecuted" or "happy, happy are the persecuted."
We are to be faithful in what we do. Galatians 6:9 says, "And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart." Don't be weary in reading your Bible and seeking to live by what it teaches. Don't be weary in praying for your family, friends, and country. Don't be weary in sharing your faith with others. Don't be weary in serving the Lord with the gifts that God has given you. Don't be weary in that. For in due season, you will reap if you don't give up.
God keeps careful records, and He promises to reward us for our faithfulness.