NET
10 Therefore, brothers and sisters, make every effort to be sure of your calling and election. For by doing this you will never stumble into sin.
Darby
10 Wherefore the rather, brethren, use diligence to make your calling and election sure, for doing these things ye will never fall;
KJV
10 Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall: