Proximity to Jesus may not necessarily mean that you are spiritually alert, the enemy's strategy can be solid enough to take advantage of your blind side. Allow God to cover you instead of relying on your own understanding.
Consider Luke 22:31 And the Lord said, “Simon, Simon! Indeed, Satan has asked for you, that he may sift you as wheat.32 But I have prayed for you, that your faith should not fail; and when you have returned to Me, strengthen your brethren.”33 But he said to Him, “Lord, I am ready to go with You, both to prison and to death.”34 Then He said, “I tell you, Peter, the rooster shall not crow this day before you will deny three times that you know Me.”