Wherefore, be not weary
for ye are
laying the foundation
of a great work.
And out of small things proceedeth that which is great.
Being good and doing the right thing takes effort. The Lord's work is work, and can be tiring. But it shouldn't make us "weary." This counsel echoes Paul's words in Galatians 6:9.
To "faint" here means to give up, I think. It makes sense--if we work hard, then give up, we won't see the fruits of our labors. It doesn't mean there won't be any. We just won't see them.And let us not be weary in well doing: for in due season we shall reap, if we faint not.
Speaking of fruits, what is a smaller thing than a seed? Delicious fruits don't appear spontaneously. A seed must be planted, and tended. If all goes well, one seed may produce many fruits containing many more seeds. Plants are amazing that way. So is spiritual effort. The Lord could accomplish His work all by Himself. But He lets us join in, adding our little bit, so that we may also enjoy the great blessings He has to give.
Little bits of obedience, kindness, determination, repentance, faith, they all lay the foundation of a stalwart character in ourselves. Little bits of service and gospel-sharing can lay the foundation of transformation in others.
Therefore, dearly beloved brethren, let us cheerfully do all things that lie in our power; and then may we stand still, with the utmost assurance, to see the salvation of God, and for his arm to be revealed. Doctrine and Covenants 123:17