Наконец, братия мои, укрепляйтесь Господом и могуществом силы Его.
Finally, be strong in the Lord and in his mighty power.
Finally, be strong in the Lord and in the strength of his might.
Finally, be strong in the Lord and in the strength of His might.
A final word: Be strong in the Lord and in his mighty power.
Finally, my brethren, be strong in the Lord, and in the power of his might.
Finally, my brethren, be strong in the Lord and in the power of His might.
For the rest, brethren, be strong in [the] Lord, and in the might of his strength.