Hebrews 13:5 & 6

"Keep your lives free from the love of money and be content with what you have, because God has said, 'Never will I leave you; never will I forsake you.' So we say with confidence, 'The Lord is my helper; I will not be afraid. What can mere mortals do to me?'" NIV translation

Paul warns that one of the biggest enemies of this hesed type of love can be the love of money. The love of money comes from a false sense of security that it gives a person. It can become what we put our trust in instead of God and so become an idol. The love of money also can affect out relations with others as we are unwilling to help the needy if we are concerned about the cost of the help. 

Hebrews 13:7 & 8

"Remember your leaders, who spoke the word of God to you. Consider the outcome of their way of life and imitate their faith. Jesus Christ is the same yesterday and today and forever." NIV translation

Paul urges the Jewish believers to remember those that had shared the gospel with them and to imitate their faith. At this time, it was not easy to be a Christian or to share your faith. These people did so because the gospel had penetrated their heart. Paul reminds the believers to hold onto Jesus who is unchanging and not go back to the Law.

Hebrews 13:9 & 10

"Do not be carried away by all kinds of strange teachings. It is good for our hearts to be strengthened by grace, not by eating ceremonial foods, which is of no benefit to those who do so. We have an altar from which those who minister at the tabernacle have no right to eat." NIV translation

The strange teachings were efforts to add parts of the Law to the grace of God. The Judaizers wanted people to hold onto parts of the temple worship practices but Paul reminds them that our altar is in heaven not in a manmade building. He makes a clear statement that those who remain in the old ways and reject Jesus have no right to the kingdom of heaven. When you try to add any part of the Law to grace, it ceases to be grace and it is only by grace that one is saved.