How Platform of Truth is Established

....and be established in the present truth....

For precept must be upon precept, 

precept upon precept; 

line upon line, line upon line.....

2 Peter 1:12/Isaiah 28:10

"Such is the connection, relation and dependence of one great truth upon another, that every additional evidence upon one, proportionably strengthens all the rest; and thus,
--by this reciprocal strength which each point furnishes to the others, the great platform of truth is established."
Uriah Smith