When standing firm
“Be watchful, stand firm in the faith, act like men, be strong.” (1 Cor. 15:13 ESV)
Stand firm in the Lord
“Therefore, my brothers, whom I love and long for, my joy and crown, stand firm thus in the Lord, my beloved.” (Phil. 4:1 ESV)
Stand firm in one spirit
“Only let your manner of life be worthy of the gospel of Christ, so that whether I come and see you or am absent, I may hear of you that you are standing firm in one spirit, with one mind striving side by side for the faith of the gospel,” (Phil. 1:27 ESV)
Stand firm in freedom
“For freedom Christ has set us free; stand firm therefore, and do not submit again to a yoke of slavery.” (Gal. 5:1 ESV)
Stand firm in faith
“Resist him, firm in your faith, knowing that the same kinds of suffering are being experienced by your brotherhood throughout the world.” (1 Peter 5:9 ESV)
Therefore…
“Therefore, my dear brothers and sisters, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord, because you know that your labor in the Lord is not in vain.” (1 Cor. 15:58 NIV)
“Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm.” (Eph. 6:13 ESV)