'Inclination' in the Bible

Now these people were more noble and open-minded than those in Thessalonica, so they received the message [of salvation through faith in the Christ] with great eagerness, examining the Scriptures daily to see if these things were so.

A little leaven [a slight inclination to error, or a few false teachers] leavens the whole batch [it perverts the concept of faith and misleads the church].