Install social plugin that has it's own SHORTCODE and add it to Theme Options - Socials - 'Login via Social network' field. We recommend: Wordpress Social Login
Colossians 2:9-10 New King James Version (NKJV)
9 For in Him dwells all the fullness of the Godhead [a]bodily; 10 and you are complete in Him, who is the head of all [b]principality and power.