Jesus calls a most unlikely person to follow him. Does life have meaning and purpose? Can it be known by ordinary people?

Mark 2:13-17 English Standard Version (ESV)
Jesus Calls Levi
13 He went out again beside the sea, and all the crowd was coming to him, and he was teaching them. 14 And as he passed by, he saw Levi the son of Alphaeus sitting at the tax booth, and he said to him, “Follow me.” And he rose and followed him.

15 And as he reclined at table in his house, many tax collectors and sinners were reclining with Jesus and his disciples, for there were many who followed him. 16 And the scribes of[a] the Pharisees, when they saw that he was eating with sinners and tax collectors, said to his disciples, “Why does he eat[b] with tax collectors and sinners?” 17 And when Jesus heard it, he said to them, “Those who are well have no need of a physician, but those who are sick. I came not to call the righteous, but sinners.”

Bible Reading

1 Peter 2:4-10 English Standard Version (ESV)
4 As you come to him, a living stone rejected by men but in the sight of God chosen and precious, 5 you yourselves like living stones are being built up as a spiritual house, to be a holy priesthood, to offer spiritual sacrifices acceptable to God through Jesus Christ. 6 For it stands in Scripture:

“Behold, I am laying in Zion a stone,
a cornerstone chosen and precious,
and whoever believes in him will not be put to shame.”

7 So the honor is for you who believe, but for those who do not believe,

“The stone that the builders rejected
has become the cornerstone,”[a]

8 and

“A stone of stumbling,
and a rock of offense.”

They stumble because they disobey the word, as they were destined to do.

9 But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. 10 Once you were not a people, but now you are God’s people; once you had not received mercy, but now you have received mercy.