It may be far easier to tithe my income than to tithe my time. Faithful stewardship goes beyond financial tithing. All of my time is God's. All my talents and energies are God's. Since this is true, I must carefully measure where I put my time.
Time is the universal equalizer.
Everybody has the same amount each day. Even Jesus Christ had only 24 hours per day. But he also invested His time in caring for the sick, outcast, diseased, and lonely. Every hour we have on this earth is a gift from God. He wants us to be stewards of our time, investing it in activities which pay off for His work on earth.