St Ignatius tells us that we need to be attentive to the big and the small things, to the responses of other people, to the stirrings in our hearts, and to the preoccupations that thread their way through our lives. Being attentive takes practice; it is much easier to rush from one thing to the next, taking little time to notice anything. Once we develop the habit of being attentive, we can begin to discern what is good for us and what is not; and what God calls us to be, and to do.
1 Kings 3:9
So give your servant a discerning heart to govern your people and to distinguish between right and wrong. For who is able to govern this great people of yours?
1 Samuel 16:7
But the Lord said to Samuel, “Do not consider his appearance or his height, for I have rejected him. The Lord does not look at the things people look at. People look at the outward appearance, but the Lord looks at the heart.”
Matthew 10:16
I am sending you out like sheep among wolves. Therefore be as shrewd as snakes and as innocent as doves.
Matthew 24:24
For false messiahs and false prophets will appear and perform great signs and wonders to deceive, if possible, even the elect.