1 John 3:29 - 3:6 / John 1:29-34
To be able to see something would indicate that it exists in reality.
Of course, to be able to touch that thing would dispel the possibility that it is just an optical illusion.
Upon seeing something, then our reasoning would help to assess what it is and make an opinion about it.
When it comes to persons, we may be able to see the external features but we may not be able to immediately see the character and other aspects of a person.
In the gospel, when John the Baptist saw Jesus coming towards him, he immediately recognised Jesus as the Lamb of God who takes away the sin of the world.
But it was certainly not by his own reasoning or assessment that he made that declaration.
As John the Baptist would testify later, he didn’t know about Jesus himself.
But the One who sent him to baptize with water had said to him:
The man on whom you see the Spirit come down and rest is the one who is going to baptize with the Holy Spirit.
We have received the Holy Spirit, and with the enlightenment and guidance of the Holy Spirit, we will be able to see what God wants us see.
Not only will we see what God wants us to see, He will also enlighten us and guide us to be witnesses of His love to those whom we are looking at.