Psalm 49:6

A couple weeks ago, I read Psalm 49 and noticed a feature in verse 6.  In the NKJV, the sense continues beyond verse 6 into verse 7:  "6 Those who trust in their wealth and boast in the multitude of their riches, 7 none of them can by any means redeem his brother, nor give to God a ransom for him."

In the ESV, however, verse 6 continues the sense from verse 5:  "5 Why should I fear in times of trouble, when the iniquity of those who cheat me surrounds me, 6 those who trust in their wealth and boast of the abundance of their riches?"  The NIV is similar:  "5 Why should I fear when evil days come, when wicked deceivers surround me - 6 those who trust in their wealth and boast of their great riches?"

In any case, what I noticed is that the parallelism between "their wealth" and "their riches" highlights this abundance.