Stand fast in the Lord.
Today’s verse calls to mind a picture of a soldier standing his ground in the midst of battle. Paul used the same metaphor in Ephesians 6:11: “Put on the whole armor of God, that you may be able to stand against the wiles of the devil.” Standing fast or firm spiritually means not compromising your Christian testimony in allowing yourself to be overwhelmed by trials or temptation.
It saddens me that many believers don’t take God and His commands seriously enough. Instead of wanting to know God, many prefer to be entertained. That kind of apathy regards His commands as mere suggestions. But our sovereign Lord commands us to stand firm. Inherent in that command is the capacity to obey.