“Join together in following my example, brothers and sisters, and just as you have us as a model, keep your eyes on those who live as we do.” (Philippians 3:17, NIV)
Every person is a “model.” Some people are examples of what to do; and others are examples of what not to do.
Paul encouraged the disciples in Philippi to follow his own example, and to follow others in the community who live similarly.
Righteous living needs to be encouraged because it often requires making choices that are contrary to the culture; such as, eschewing the love of money, loving our enemies, and being kind to the poor.
If you are discouraged because it seems that you’re alone on the narrow path of righteous living, look around! When you find a fellow-traveler, keep your eyes on him or her, even if from afar. – Luther